@thecreativeone91 said:

None of them I know started as an Linux Intern... Just an intern at the company then became really good at Linux and was given a full time job.

Then yes, I'd agree with that being the most common path that I see.

I have not seen anything in as high of demand as Linux has been the last several years. Other things get more attention in the news because they are newer, flashier or more interesting to the public, but in the business space it seems that Linux is remaining the big ticket item.